Method of producing embossed metal work.



l. J. E. AGREN. METHOD 0F PRODUCING EMBOSSED METAL WORK. APPLICATION FILED MAR. r9. 191e.

1 278, 8 1 6 w Patented Sept. 17, 1918.

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IVAB JOHAN EDWARD GREN, 0F UDSALA, SWEDEN.

METHOD OF PRODUCING EMBOSSED ltlE'llilllI` WORK.

Specification of Letters Patent. Patnted Sept. 17, 1918.

Application filed March 19, 1918. Serial No. 223,477.

produced and after this the positive is furnished by means of galvano-plastic with a thick lining, a solil bed being then cast upon the lining and the positive being torn off or removed so that the desired negative will be exposed. The said negative is especially adapted for pressing such a soft material as lead upon the negative, and this pressing is preferably effected by hand.

In the accompanying drawings, Figure 1 is an elevation of a plate made in accordance with the present invention. Fig. 2 is a vertical sectional view of the saine, taken on the line Q-Q of Fig. 1.

A designates the positive plate formed with a number of perforations ci extending transversely through the plate. and designate the relatively thick copper linings which are disposed upon opposite sides of the plate A and which, as shown in Fig.

Spec-m1 ,nach Q have portions thereof filling theperfoi'arlhe characteristics of the invention con mms a S0 that the hmngs are Flgldly COB' sist in pressing a thin lead-plate or the like acted L O each, 0th@ and t9 the Plate' upon a negative in such a manner that. the The mvetwm l? @SDeCuY Uli-ended for lead-plate itself will form a positive, perthe Productlon O MSC'HY Olmmenl forating the plate and then furnishing such 019mm@ m'mfltU-'G but of @musei 1t @ml be a positive by means of gatvano-plastics, employed 'fomlny other FUYPOSQS- both Smeg What I claim is:

with a rather thick lining on Then ,L lead, t'm Or Such -1 plate is awk A method of producing embossed metal bath work which ployed, it is primarily furnished in a ConSStS m {Wm-mg a POSWB of hydrocyanate o potash with a thin lin- Plate Composed of so@ metal by loressm ing of for instance? Copper, before the gap the plate upon a negative in `such a manner vano-plastic precipitation is made. By first that' th? Plate 5591i W1 foj'm DOSWQ' perforating the lead-plate and then forming ljeffomtug the Plate; @md mm fol'mmg a L Copper ming on both Sides Op the plate, comparatively thick lining of metal on both a portion of the copper of each lining is de- Sides O the P13?? by means O f galvmo'plas posited in the perforations, thus rigidly con- QCS and deposltmg a metal m tha Perfom necting thek two linings and forming a strong ons 0f the Plattlconnection between the copper and the leadh1 testlmny whereof, I btw@ Slgned my 1,1m@ The wat@ thus Composed Wm OHM. name to thisspecification in the presence the greatest possible resistance to bending WO subsclbmg Wltnessesi stresses and the like, while employing the 1V AR JOHAN EDWVARD GREN. least possible amount of copper.

In order to get a suitable negative for the Witnesses:

method in question, a positive of lead-plate, J F. A. RUTBATK,

copper, or the like, made by hand can be Jiioo BAGGs.

To all whom it may concern.'

Be it known that l, IVAR J oHAN EDWARD GREN, a subject of the King of Sweden, residing at Upsa-la, Sweden, have invente new and useful Improvements in Methods of Producing Embossed Metal Work, of which the following is a specification.

The present invention relates to a method of producing embossed or chased metal work, and more particularly that work which is composed of copper.

An obj ect of the invention is the provision of a method of the above-described characier wherein the cost of manufacture of embossed metal work is materially reduced without sacri cing its artistic quality.

Another object .of the invention is a method of producing` embossed metal work, whereby the metal work can be produced in large quantities from a single pattern withont the use of a ine.

ve cents each, by adi'essing the Commissioner o! Patents,

Washington, D. C."

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